PCB umhlwa ubangelwa zizinto ezininzi ezahlukeneyo, ezinje:

* Ukonakala kweatmospheri

* Ukubola kwendawo

* ukubola kombane

* Ukubola kwe-Electrolytic

* Ukubunjwa kwe-dendrite ye-Electrolytic

* Ukudambisa umhlwa

* Umhlwa phakathi kwegranular

Ukubola kwebhodi yesekethe kunokuba yingozi kakhulu kwiibhodi zesekethe eziprintiweyo, kwaye ngelixa kukho izizathu ezininzi zokubola kwePCB, kukho iindlela ezininzi zokuzicoca usebenzisa iimveliso zasekhaya zesintu ezifana nesoda yokubhaka kunye nomoya ocinezelweyo.

Amanyathelo okhuseleko anokuthathwa ukuqinisekisa ukuba ukubola kwe-PCB akwenzeki kwixesha elizayo.

Yintoni ebangela umhlwa PCB?

Ukonakala kwebhodi yesekethe kunokuba yingozi ekutshabalaliseni ngokupheleleyo iPCB, ngaloo ndlela iyenza ingabinamsebenzi. Lo mhlwa ungabangelwa zizinto ezahlukeneyo. Yinkqubo ye-oxidation eyenzekayo xa ioksijini idityaniswa nesinyithi kwaye ibangela umhlwa kunye nokudilika.

Ukonakala kwe-atmospheric

Umhlwa ovela esibhakabhakeni, olona hlobo luxhaphakileyo lwe-PCB corrosion, kubandakanya isinyithi ukuba siveliswe ukufuma, okuthi emva koko sikubeke kwioksijini. Ukudityaniswa kwezi elementi kubangela ukusabela apho ii-ion zesinyithi zidibana neeathom zeoksijini zenze iioksidi.

Ukubola kwe-Atmospheric kwenzeka ikakhulu kwiindibano zobhedu. Nangona ubhedu bugcina iipropathi zoomatshini nokuba zitshile, ayigcini ukuqhuba kombane.

Umhlwa wendawo

I-corrosion yendawo ifana naluphi na uhlobo lwe-corrosion jikelele, ngaphandle kokuba ichaphazela kakhulu indawo encinci okanye indawo encinci. Lo mhlwa ungabandakanya ukubola kwe-filamentous, i-crevice corrosion kunye ne-pitting corros.

Ukubola kombane

Olu hlobo lomhlwa lwenzeka kwiindawo ezahlukeneyo zesinyithi kunye ne-electrolyte, apho intsimbi enganyangekiyo ku-corroshe idla ngokukhawuleza kunesiseko sesinyithi esivezwe kuso.

I-Electrolytic corrosion

Ukubola kwe-Electrolytic kwenzeka xa i-dendrite ikhula ngenxa yokunxibelelana. Olu lwando lwenzeka xa amanzi e-ionic angcolisekileyo engena kumbane phakathi kwemikhondo emibini. Ujika umcu wentsimbi ubangele isiphaluka esifutshane.

Ukuqulunqwa kwe-dendrite ye-Electrolytic

Ukubunjwa kwe-electrolytic dendrite kwenzeka xa kukho ungcoliseko lwe-ion emanzini. Olu tshintsho luya kubangela ukuba nayiphi na imikhondo yobhedu ekufutshane eneendlela zombane ezahlukeneyo zikhule imicu yesinyithi, eya kuthi ekugqibeleni ikhokelele kwisekethe emfutshane phakathi komkhondo.

Umhlwa omncinci

Ukunxunguphala sisiphumo sokusoloko ucima iswitshi yetoni. Le ntshukumo ivelisa isenzo sokusula ekugqibeleni sisusa i-oxide layer ukusuka phezulu. Xa oku kusenzeka, umaleko ongaphantsi kwawo u-oxidize kwaye wenze umhlwa ogqithisileyo ophazamisana nokusebenza kokutshintsha.

Ukubola kwangaphakathi

Lo mhlwa wokugqibela ubandakanya ubukho beekhemikhali kwimida yeenkozo zomkhondo wobhedu, kwaye umhlwa wenzeka ngenxa yokuba imida yeenkozo isengozini enkulu yokubola ngenxa yomxholo wayo wokungcola okuphezulu.

Ususa njani umhlwa kwiPCB?

Ekuhambeni kwexesha, ngaphezu komhlwa kunokuqokelelana kwiPCB yakho. Ukungcola, uthuli kunye nobumdaka bazo zonke iintlobo bungena ngokulula kwisixhobo sakho sombane. Ukuzicoca kunokunceda ukukhusela ukubola. Nangona kunjalo, ukuba ufumanisa ukuba i-PCB ithile, ungafunda ukususa umhlwa kwaye usebenzise ezi ndlela zilandelayo ukunqanda ukonakala okusisigxina.

Sebenzisa umoya oxineneyo

Umoya ocinezelweyo sisixhobo esiqhelekileyo sokucoca nge-elektroniki. Ungasebenzisa umoya oxinanisiweyo ngokukhupha iipulse ezimfutshane ngaphakathi kwi-vent. Le ndlela yokucoca iyacetyiswa kukhathalelo lwe-elektroniki oluqhelekileyo, ngoko ke ukuba ufuna ukujongana ne-corrosion, kuya kufuneka uvule i-electronics kwaye uyibethe kumthombo.

Sebenzisa i-soda yokubhaka

Isoda yokubhaka sisixhobo esisebenzayo sokususa umhlwa wePCB. Ayisiyiyo loo nto kuphela, kodwa iikhabhathi zakho zasekhitshini mhlawumbi sele zinesoda yokubhaka. Ngenxa yokuba isoda yokubhaka irhabaxa ngokuphakathi, ungayisebenzisa ukukhuhla umhlwa kunye nentsalela engayi kukhutshwa ngumoya oxinanisiweyo. Zama ukuyisebenzisa ngebrashi encinci kunye namanzi adibeneyo.

Sebenzisa amanzi acocekileyo

Ukuthetha ngamanzi adibeneyo, le mveliso nayo yindlela efanelekileyo yokukhupha ngokukhuselekileyo nangokulula ukubola kwiibhodi zeesekethe. Amanzi acocekileyo acocekileyo ngekhe athobele okanye onakalise izixhobo zakho zombane. Ikwangumqhubi owonakeleyo, ngoko ke akukho sizathu sakukhathazeka.

Sebenzisa izinto zokucoca indlu

Nasiphi na isicoci sendlu sisisombululo esilungileyo kwi-PCB corrosion, kodwa kuphela xa ingenayo i-phosphates. I-Phosphates iyasebenza ekuthinteleni ukubola, kodwa ingumthombo obalulekileyo wongcoliseko kumachibi aseMelika kulo lonke elaseMelika. Nangona kunjalo, baninzi kakhulu abantu abacoca i-phosphate abasebenza kakuhle. Kukwakho nezicoci ezikhethekileyo zePCB kwimarike.

Sebenzisa ibrashi

Ibrashi inokuba sisixhobo esiluncedo kakhulu xa ucoca ibhodi yesekethe, njengoko ikunceda ukuba ufumane phakathi kwawo onke amacandelo amancinci. Ukukhetha ibhrashi enamabristle athambileyo kubalulekile. Ubungakanani bubalulekile, njengoko kufuneka ukwazi ukufikelela kuzo zonke iZithuba ezincinci.

Uninzi lwabantu luthanda ukusebenzisa ibrashi yamazinyo okanye ibrashi yokupeyinta. Bomelele kwaye bathambile, kwaye uninzi lwabantu sele lunayo ubuncinci kubo.

Indwangu ye-microfiber engacimiyo ikwasisixhobo esilungileyo sokusula nokucima ibhodi ngoko nangoko emva kokucoca.

Uthintela njani umhlwa kwibhodi yesekethe?

Iintsimbi ezahlukeneyo zinemigangatho eyahlukeneyo yomngcipheko wokuhlwa. Nangona zonke zinokugqwala ekugqibeleni, ubhedu kunye nezinye iziseko zesinyithi zigrumba ngokulula kwaye zikhawuleze kuneentsimbi ezixabisekileyo kunye nezinye ialloys. Okokugqibela kubiza kakhulu, ke uninzi lweengcali luya kunamathela kwisinyithi esiqhelekileyo, ke kubalulekile ukuba ukwazi ukuthintela ukubola kwe-PCB ngaphandle kokonakalisa ibhodi yayo.

Indlela elula yokuthintela umhlwa kwibhodi yesekethe kukubeka isambatho kwindawo yobhedu ebonakalayo. Zininzi iindidi zokwaleka, kubandakanya ukutyabeka nge-epoxy, ukutyabeka ngeerosol kunye ne-flux inhibitors.

Kufuneka uzame ukunqanda ukufuma malunga nePCB. Zama ukubagcina kwindawo engafumanekiyo kukufuma. Ungayisombulula le ngxaki ngokusebenzisa i-humidifier kwigumbi elinye. Kodwa ukwazi indlela yokuthintela ukubola kwe-PCB linyathelo lokuqala kwimpumelelo.

siphelo

Ukonakala kwiibhodi zeesekethe ngokwemvelo kwenzeka ngexesha elithile ebomini besixhobo sombane. Ngelixa singakuphepheli ukusisebenzisa ngokupheleleyo, sinokuthatha amanyathelo okwandisa ubomi bezixhobo zombane ngokunqanda ukubola nokuziphatha ngokufanelekileyo. Kulula ukufunda ukucoca ibhodi yesekethe edibeneyo, kodwa kubalulekile.